Hi! Well done with your game. It is super nice to play. The music is fitting, the controller is smooth and you have a solid game mechanic through out the whole game. It is crazy that you did that in 48 hours.
Suggestions :
* The attacking feels a little unresponsive (To slow)
* add coyote jump to your movement controller (You can youtube it)
* add camera shake when something significant happens
Hope this helps you out :-) Nice game!